Graded-index ridge surface plasmon polaritons waveguide  

作　　者：叶春伟 刘玉敏 汪洁 吕宏博 俞重远 

机构地区：[1]State Key Laboratory of Information Photonics and Optical Communications, Beijin University of Posts and Telecommunications [2]State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences

出　　处：《Chinese Optics Letters》2014年第9期79-82,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.61275201 and 61372037);the Beijing Excellent Ph.D.Thesis Guidance Foundation(No.20131001301);the Fund of State Key Laboratory of Information Photonics and Optical Communications(Beijing University of Posts and Telecommunications);the Opened Fund of the State Key Laboratory on Integrated Optoelectronics,Institute of Semiconductors,Chinese Academy of Sciences

摘　　要：We propose and analyze a long-range dielectric-loaded surface plasmon polariton （SPP） waveguide based on graded-index ridge over server millimeter distances. Then the influence of the dielectric thickness and the ridge refractive index on propagation length and mode width is discussed and simulated with the finite ele- ment raethod. The result shows that the SPP can propagate as long as 3.42 mm, as well as the mode width keeping as 1.64μm, a better one compared with the fixed refractive index. Considering its nanoscale dimension and outstanding performance, the structure is easily realized when connected with electrodes.We propose and analyze a long-range dielectric-loaded surface plasmon polariton （SPP） waveguide based on graded-index ridge over server millimeter distances. Then the influence of the dielectric thickness and the ridge refractive index on propagation length and mode width is discussed and simulated with the finite ele- ment raethod. The result shows that the SPP can propagate as long as 3.42 mm, as well as the mode width keeping as 1.64μm, a better one compared with the fixed refractive index. Considering its nanoscale dimension and outstanding performance, the structure is easily realized when connected with electrodes.

关 键 词：Electromagnetic wave polarization Finite element method Particle optics PHONONS PHOTONS PLASMONS Quantum theory Refractive index Surface plasmon resonance Traveling wave tubes Waveguides 

分 类 号：TN252[电子电信—物理电子学] O53[理学—等离子体物理]